Greg Ferro of EtherealMind comments:
One of the key business drivers behind SDN is to extract value from network connectivity. Before SDN, the functionality derived from connecting servers to switches was inherently valuable. In the post-SDN era, the network has services value instead.
Services are the drivers in the new SDN economy. If you can’t tie the network to a service, you may find yourself out in the cold.
Read more at: Understanding SDN: Services, Commodities and Value